Were you the two Brits opposite me on the the R train yesterday evening?
You are right in the middle of two neighborhoods- if you wander south, you will hit Sunset Park. I am a fan of Tacos Matamoros for Chilaquiles ( 45th and 4th, is that too far for you?).
North are a few diners and "fancier" places as you head into Park Slope. I like the coffee place near where Aarons used to be around 20th and 5th. They would have more of a continental breakfast.
4508 5th Ave, Brooklyn, NY 11220